CorBon's Traditional Jacketed Hollow Point +P ammunition made its reputation with "high velocity" loads. This high velocity , combined with CorBon's exclusively designed, jacketed hollow point bullets, makes for a very effective self-defensive load. Penetration and expansion in the test medium of 10% ballistic gelatin are excellent; expansion is consistently 2 times the original diameter of the bullet. Depending on caliber and bullet weight, penetration is between 9 and 14 inches